Gas burner and ventilator



May 6, 1930.A F; EMSHWWy E T AL '1,757,898

GAS BURNER AND VENTILATOR lFiled oc;A e, 1927 ATTORN EY Patented May 6,i 1939 FRANK BUSEMN ND RQBERT MCFARLANE, 0F BRANDON, MNTOB.; CVANDA.

GAS BURNER AND VE'IILATOR Application le Sctober 6,

' te stantially utilized and turned into heat, with the result maximumheat is obtained from the fuel used and cost of operation of the,

furnace will be reduced to a minimum.

A further object of the invention is to provide anV attachment forfurnaces and the like, that produces a constant dow and circulation ofdraft airs to promote combustion,

` and said How and circulation can be controlled in accordance with theoperators desires. i,

Another object of the invention isto provide an attachment for furnacesand the like, that collects and consumes foul air and the like from vthepremises where installed and enables proper ventilation ofy saidpremises by leaving the same in a pure and clean condition. p

A still further object of the invention is I to provide an attachmentfor furnaces of the character above set forth that will prevent excessand dangerous accumulation of gases, with the result damageto thefurnace by such accumulationfwill be impossible.

, Another object of the invention is to provide an attachment to performthe functions labove referred to, that is extremely simple in"construction, inexpensive to 1 manufacture and is eiiicieit inoperation and service.

A still fur her object of the invention is 'to provide an attachmentthat causes the furnace to consume` smoke before it reahes theatmosphere.

This invention also consists in certain other features of 'constructionand in the combination and arrangement of the several parts, to behereinafter fully described, illustrated 'in the accompanying drawingsand specifically 'pointed out inthe appended claims.

' In describing our invention in detail, reference will be had to theaccompanying drawture of thel pipe 1 with the 192'?. Serial No.224,4721..

ings wherein like characters denote like or corresponding partsthroughout the several views, and in which:

Figure 1 is a vertical sectional view taken through a steam boiler andshowing the application of our attachment thereto.

Figure 2 is. a top plan vie-w thereof with parts in section. i

Figure 3 is a sectional view taken approximately on line 3 3 of Figure 2and looking in the direction of -the arrows.

Referring to the drawings in detail it will be noted that we have shownour attach-A ment a plied to a tube steam boiler of the vusualconstruction but it is to be understood that the attachment can beapplied to any A:furnace of any kind, type and size without departingfrom the spirit of the invention.

The steam boiler as shown includes the usual fire box A,y bridging B,boiler C with drafting tubes arranged longitudinally therein, and theletter D indicates the front wall which is in communication with the dueE, whilethe flue E is disposed in communication in the usual manner withthe smoke stack F.

The attachment which forms the subject matter of the present inventionis shown disposed in communication with the flue E and is formed by avertically disposed pipe l having its lower end spaced from the door asbest shown in Figure 1 of. the drawings, and said pipe 1 is supported insuch spaced 'relation by depending legs 2. Securedgto the lower edge ofthe pipe 1 and extending theretrom to the floor is a screen 3 whichprevents `e passage of dirt and other foreign matter from being drawninto the pipe as will be readily apparent. l

Secured to-the upper end of the pipe l1 is anelbow 4, and' arranged atthe point'of juncelbow 4 and at the front thereof is a'substantiall'yV-shaped depression 5 formed in the pipe toprovide an air passage.- Theelbow isA otherwise secured an air. tight and extending laterally`rtherefrom is a pipe -f 6 having fixed to its outer end an elbow 7 thelusual construction and said damper is` disposed slightly below thecenter of the pipe 1 as shown in Figure 1.

From the above description and disclosure of the drawings, it will beobvious that the pipe 1 is in reality a cold air shaft which is spacedthe proper distance from the floor to allow the free passage of air fromthe i premises as indicated by the arrows in -Figure 1,' and by thisconstruction, it will be apparent that all of the foul air and thelikewill be drawn from the premises and beconsumed with the result thepremises will be retained in a pure and clean condition as far as theatmosphere thereof is concerned. The air from the pipe 1 is conveyed tothe elbow 4 and due to the air passage 5further air is added, whichcauses further impetus to the air currents. This additional y air helpsto convey the air currents through the pipe 9 and elbow 7,-and forcesthe smoke and unburnt gases which meet the incoming air cur rentssubstantially in the space of the attachment between the opening 8 andair passage 5 and in the Hue E. back to the lire box of the furnace sothat they will be ignited and consumed before being passed totheatmosphere as will be apparent. The arrows in the furnace indicate thepassage of the smoke and unburnt gases in their outward ldirectionbefore they are met by the incoming air from theattachment. The space inthe attachment between the opening 8 and air passage 5 acts in thenature of an equalizer, as in the event excessive accumulation of gasshould occur in the flue or parts of the attachment, some of the gaswill escape through the opening 8, with the result the incoming-aircurrents from the pipe land passage 5 will always be sufficient tobalance with the natural dra-ft below the fire box and retainsubstantially all of the unburnt -gases in the fire box to be consumed.In view of the commingling of the unburnt gases, smoke and the like withthe incoming air, the smoke will be entirely consumed and residue andthe like that accumulates 'in the flue and parts of the 'attachment willbe reduced to a minimum. The action of the natural draft from below thegrate and incoming air currents from the chimney, and the incoming ai'rcurrentsl from the Iattachment which have atendency to control themovement of the natural air drafts, will commin'gle and cooperate insucha way tov promote practically complete consumption of t-he products'of fuel in thefurnace, and the action of these respective drafts and aircurrents will be in the nature of natural respiration. l

It is thought from the foregoing description that the advantages andnovel features of our invention will be readily apparent.

We desire it to be understood that we may vmake changes in theconstruction and in the combination and arrangement of the severalparts, provided that such changes fall within the scope of the appendedclaims.

vWhat we claim is:

l. An attachment for a furnace, a ue for said furnace, saidattachmentcomprising a vertically disposed pipe, legs supporting'saidpipe above a floor surface to allow the passage of air thereto, a screensecured to said pipe to prevent the passage of'foreign matter therein,adamper in said pipe and making the same air tight when closed, an elbowsecured to the upper end of said pipe, said pipe being provided with adepression formed at the juncture of the pipe with the elbow to provideanA air passage, a second elbow in communication with the flue, beingprovided with an opening in its top disposed in a line above the airpassage, and a pipe .connecting the respective elbows.

2. An attachment for a furnace,'a flue for said furnace, said attachmentcomprising a vertically disposed cold air shaft, legs secured to anddepending from the lower end of the shaft to space' the same froma oorand allow free passage of air to the shaft, a damper in said shaft, anelbow secured to the upper end of said shaft, an elbow adapted to beincommunication with the flue and being formed with an opening in its top,a pipe connecting the elbows for` communication with each other, asubstantially V-shaped depression formed in the front of `said pipe andat the juncture thereof with its elbow to-provide an air passage as andfor the purpose specified.

3. An attachment for a furnace, a flue for said furnace, said attachmentcomprising a cold-air draft pipe adapted to be vertically disposed andhave its lower end arranged in spaced relation with a floor to allow airto pass therein, a damper in said pipe, an elbow secured to the upperend of said pipe, a pipe extending laterally from the flue and being incommunication therewith, an elbow secured to the last mentioned pipe andbeing provided with anv opening adjacent one endand in its top, a pipeconnecting the elbow, a substantially V-shaped depression formed in thefront ofsaid ipe and at the juncture thereof with its el ow to -providean air passage.

4. An attachment for a furnace, a flue between the furnace smoke box andsmoke stack, said attachment comprising an elongated vertically disposedpipe, a damper in said plpe, an elbow secured to said pipe, said pipebeing provided with a depression at its juncture withihe elbow tovprovide an air passage, and means in communication 'with the lue of thefurnace and the elbow and being provided with an air passage cooperatingwith the air passage flrsl mentioned to allow the air'currents to`balance one another.

In testimony whereof we ax our signa-C tures.

FRANK BUS. ROBERT MOFARLANE.

